A. Alcohol
B. Distilled water
C. Salt
D. Fruits jam
Related Mcqs:
- Multiple effect evaporation accounts for___________________?
A. Steam economy
B. Lower operating costs
C. Investment economy
D. None of these - Evaporation by thermo compression results in the _________________________?
A. Saving of steam
B. Realisation of multiple effect economy in a single effect
C. Both A. and B.
D. None of these - Small scale evaporation is done in a_________________?
A. Heat exchanger
B. Condenser
C. Multiple effect evaporator
D. Steam jacketed kettle - Multiple effect evaporation is generally recommended, when the______________________?
A. Large scale evaporation of liquor is needed
B. Corrosive liquids are to be concentrated
C. Fuel is cheaply available
D. Evaporation on small scale is to be done - Evaporation of 1kg of water from a solution in a single effect evaporator requires about ________________ kg of steam?
A. 0.4 – 0.6
B. 1-1.3
C. 1.8-2
D. 2 – 2.4 - For evaporation of viscous solution in a multiple effect evaporator, the preferred feeding scheme is _________________?
A. Forward
B. Backward
C. Parallel
D. None of these - Prandtl number is the reciprocal of____________________?
A. Thermal diffusivity/Momentum diffusivity
B. Thermal diffusivity × Momentum
C. Thermal diffusivity × Mass diffusivity
D. Mass diffusivity × Momentum diffusivity - Analogy between mass and heat transfer is not applicable in case of____________________?
A. Same velocity profile or equal eddy diffusivities
B. Thermal or pressure mass diffusion
C. Viscous heating or chemical reaction
D. Both B. and C. - The equation, Nst = (f/2)/[1 + 5 (Npr – 1) √(f/2)], corresponds to ______________ analogy?
A. Von-Karman
B. Reynolds
C. Colburn
D. Prandtl - In pipe flow, heat is transferred from hot wall to the liquid by__________________?
A. Conduction only
B. Forced convection only
C. Forced convection and conduction
D. Free and forced convection
